Encore SIM EDITOR SOFTWARE User's Guide download pdf (Page 394)

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17-10

VCD+ (vpd) File Generation

Running VCS

In order for VCS 7.0 to provide MDA data using the $vcdplusmemon

and $vcdplusmemoff tasks, the VCS +memcbk and the +v2k

switches are required.

VCS command line example: vcs -R -I mda.v +memcbk +v2k

MDA declaration example: reg [1:0] mem [3:0] [6:4];

In order for VCS 7.0 to provide memory data, the VCS +memcbk

switch is required.

VCS command line example: vcs -R -I mda.v +memcbk

Memory declaration example: reg [1:0] mem [3:0];

Examples

This section provides examples and graphical representations of

various MDA and memory declarations using the $vcdplusmemon

and $vcdplusmemoff tasks.

Note that mem01 in the following example is a three-dimensional array.

It has 3x3x3 (27) locations; each location is 8 bits in length.

reg [3:0] addr1L, addr1R, addr2L, addr2R, addr3L, addr3R;

reg [7:0] mem01 [1:3] [4:6] [7:9]

(See Figure 17-1 for an graphical representation of the previous

example).

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